Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method

The presence of sulfide in wastewater is by the result of biological, physical and chemical processes which mostly takes place in the submerged portion of the sewage collection networks. The rate of sulfide generation depends on several factors including pH, temperature, concentration of organic mat...

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Main Authors:	Edwan Hafif, Jalil, Sunarti, Abd Rahman, Norazwina, Zainol, Azilah, Ajit, Chin, Sim Yee
Format:	Article
Language:	English
Published:	Elsevier Ltd 2018
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/21102/ http://umpir.ump.edu.my/id/eprint/21102/ http://umpir.ump.edu.my/id/eprint/21102/ http://umpir.ump.edu.my/id/eprint/21102/1/44.%20Sulfide%20removal%20from%20petrochemical%20wastewater%20using%20catalytic%20wet%20air%20oxidation%20%28CWAO%29%20method.pdf

id	ump-21102
recordtype	eprints
spelling	ump-211022019-01-28T09:01:42Z http://umpir.ump.edu.my/id/eprint/21102/ Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method Edwan Hafif, Jalil Sunarti, Abd Rahman Norazwina, Zainol Azilah, Ajit Chin, Sim Yee TP Chemical technology The presence of sulfide in wastewater is by the result of biological, physical and chemical processes which mostly takes place in the submerged portion of the sewage collection networks. The rate of sulfide generation depends on several factors including pH, temperature, concentration of organic materials and nutrients, sulfate concentrations, collection system parameters and performance, and the oxidation reduction potential (ORP). Dissolved sulfide could affect biological processes in wastewater treatment plants. Other problems by hydrogen sulfide emission were corrosion of sewer concrete pipes, release of obnoxious odors to the atmosphere, toxicity to sewer workers or human health, water supply and environment pollution, and economic effects. In this research, the main objective was to remove the sulfide content that present in the petrochemical process plant using Catalytic Wet Air Oxidation (CWAO) method.This research was done initially by collecting the wastewater form petrochemical plant. It was followed by the developement of the experimental system in the laboratory to run the preliminary study and the data obtained was use in screening study to detemine the best condition of sulfide removal. The best condition suggested then was optimized using Central Composite Design (CCD) method as a response surface methodology. Three independent factors such as temperature, residence time and catalyst loading that affect the degradation of sulfide are investigated using the 23 factorial analysis. Some of the independent factors were shown to have significant effect on sulfide removals (%). After removing the nonsignificant variables from the model, response surface method was used to obtain the optimum conditions and optimized using central composite design. 13 experiments with 2 factors were designed. These factors (or variables) were: the temperature and the residence time. A full-quadratic polynomial equation between the percentage of sulfide removal (as the response) and the studied parameters are established. The optimum ranges of variables were: 42.5oC for the temperature and 12.5 minutes for the residence time. Elsevier Ltd 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/21102/1/44.%20Sulfide%20removal%20from%20petrochemical%20wastewater%20using%20catalytic%20wet%20air%20oxidation%20%28CWAO%29%20method.pdf Edwan Hafif, Jalil and Sunarti, Abd Rahman and Norazwina, Zainol and Azilah, Ajit and Chin, Sim Yee (2018) Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method. Materials Today: Proceedings, 5 (10 Part 2). pp. 22043-22049. ISSN 2214-7853 https://doi.org/10.1016/j.matpr.2018.07.066 https://doi.org/10.1016/j.matpr.2018.07.066
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Edwan Hafif, Jalil Sunarti, Abd Rahman Norazwina, Zainol Azilah, Ajit Chin, Sim Yee Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method
description	The presence of sulfide in wastewater is by the result of biological, physical and chemical processes which mostly takes place in the submerged portion of the sewage collection networks. The rate of sulfide generation depends on several factors including pH, temperature, concentration of organic materials and nutrients, sulfate concentrations, collection system parameters and performance, and the oxidation reduction potential (ORP). Dissolved sulfide could affect biological processes in wastewater treatment plants. Other problems by hydrogen sulfide emission were corrosion of sewer concrete pipes, release of obnoxious odors to the atmosphere, toxicity to sewer workers or human health, water supply and environment pollution, and economic effects. In this research, the main objective was to remove the sulfide content that present in the petrochemical process plant using Catalytic Wet Air Oxidation (CWAO) method.This research was done initially by collecting the wastewater form petrochemical plant. It was followed by the developement of the experimental system in the laboratory to run the preliminary study and the data obtained was use in screening study to detemine the best condition of sulfide removal. The best condition suggested then was optimized using Central Composite Design (CCD) method as a response surface methodology. Three independent factors such as temperature, residence time and catalyst loading that affect the degradation of sulfide are investigated using the 23 factorial analysis. Some of the independent factors were shown to have significant effect on sulfide removals (%). After removing the nonsignificant variables from the model, response surface method was used to obtain the optimum conditions and optimized using central composite design. 13 experiments with 2 factors were designed. These factors (or variables) were: the temperature and the residence time. A full-quadratic polynomial equation between the percentage of sulfide removal (as the response) and the studied parameters are established. The optimum ranges of variables were: 42.5oC for the temperature and 12.5 minutes for the residence time.
format	Article
author	Edwan Hafif, Jalil Sunarti, Abd Rahman Norazwina, Zainol Azilah, Ajit Chin, Sim Yee
author_facet	Edwan Hafif, Jalil Sunarti, Abd Rahman Norazwina, Zainol Azilah, Ajit Chin, Sim Yee
author_sort	Edwan Hafif, Jalil
title	Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method
title_short	Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method
title_full	Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method
title_fullStr	Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method
title_full_unstemmed	Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method
title_sort	sulfide removal from petrochemical wastewater using catalytic wet air oxidation (cwao) method
publisher	Elsevier Ltd
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/21102/ http://umpir.ump.edu.my/id/eprint/21102/ http://umpir.ump.edu.my/id/eprint/21102/ http://umpir.ump.edu.my/id/eprint/21102/1/44.%20Sulfide%20removal%20from%20petrochemical%20wastewater%20using%20catalytic%20wet%20air%20oxidation%20%28CWAO%29%20method.pdf
first_indexed	2023-09-18T22:30:50Z
last_indexed	2023-09-18T22:30:50Z
_version_	1777416274193678336

Sulfide removal from petrochemical wastewater using catalytic wet air oxidation (CWAO) method

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